Patents by Inventor Dong Ryul Lee

Dong Ryul Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230407508
    Abstract: As a tin-silver plating solution that contains a source of tin ions; a source of silver ions (Ag+); and an organic additive including a silver (Ag) complexing agent, a tin carrier, and a crystal grain refiner is provided, in the case of performing high-speed plating using the plating solution, the generation of whiskers is diminished, the composition of silver ions (Ag+) in the tin-silver plating solution is uniformly maintained, and thus a uniform silver composition in the formed tin-silver solder bumps can be achieved.
    Type: Application
    Filed: November 17, 2021
    Publication date: December 21, 2023
    Applicants: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, DONGWOO FINE-CHEM CO., LTD.
    Inventors: Min Hyung LEE, Woon Young LEE, Sang Hoon JIN, Yu Geun JO, Dong Ryul LEE
  • Publication number: 20230101968
    Abstract: A semiconductor device measuring device includes: a light generator which generates light; a polarizer which polarizes the light; a wafer stage including a first load port on which an undoped reference wafer is loaded, and a second load port on which a doped sample wafer is loaded, the wafer stage being movable to first and second positions at which the polarized light is incident on the reference wafer and the sample wafer, respectively; a spectroscope which collects first and second Raman spectral information of light reflected from the reference and sample wafers, respectively; a photodetector which detects first and second Raman scattering signals based on the first and second Raman spectral information, respectively; a spectrum corrector which corrects the second Raman scattering signal using the first Raman scattering signal; and a controller which calculates a concentration of the dopant of the sample wafer using the corrected scattering signal.
    Type: Application
    Filed: May 27, 2022
    Publication date: March 30, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyun Woo RYOO, Da Hee YOON, Jung Hoon BYUN, Dong-Ryul LEE, Woo Yun LEE, Dong Chul IHM, Chung Sam JUN
  • Patent number: 11535824
    Abstract: The present invention provides methods and compostions to improve the efficiency of somatic cell nuclear transfer (SCNT). There is increasing evidence that the epigenetic state of donor nuclei has a significant impact on potential of nuclear transfer embryos to develop into blastocysts, from which pluripotent stem cells are derived. Strategic application of histone agents, capable of altering epigenetic state such as methylation, allows zygotic activation and robust blastocyst generation.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: December 27, 2022
    Assignee: Sung Kwang Medical Foundation
    Inventors: Young Gie Chung, Dong Ryul Lee, Jin Hee Eum
  • Patent number: 11339369
    Abstract: Immunocompatible pluripotent stem cells (pSCs), which include cells compatible with different patient populations or patient-specific cells, find wide application in regenerative medicine therapies. Described herein are immunocompatible pSCs generated using techniques such as parthenogenesis resulting in cells possessing desired haplotypes of reduced zygosity, antigenically compatible with multiple patient populations, or nuclear transfer allowing generation of patient-specific cells. Methods described herein related to parthenogenesis, nuclear transfer, or pSC cell line generation. Also described herein are compositions of immunocompatible pSCs and cell lines generated by the aforementioned techniques.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: May 24, 2022
    Assignee: Sung Kwang Medical Foundation
    Inventors: Young Gie Chung, Dong Ryul Lee
  • Publication number: 20210340498
    Abstract: The present invention relates to a medium for direct differentiation of embryonic stem cell-derived mesenchymal stem cells, a method of preparing mesenchymal stem cells by using same, mesenchymal stem cells prepared thereby, and a cell therapy product comprising the same mesenchymal stem cells. In a medium composition and a method according to an embodiment, mesenchymal stem cells may be prepared at high yield within a short period of time. In addition, the method is simple in preparation procedure because of the absence of an embryoid body formation step and allows homogeneous cells to be prepared, thus advantageously providing a cell therapy product within a reduce period of time, compared to conventional methods.
    Type: Application
    Filed: September 6, 2019
    Publication date: November 4, 2021
    Applicant: CHA BIOTECH CO., LTD.
    Inventors: Dong Ryul LEE, Jeong Eun LEE, Soo Kyung JUNG, Kyung Soon PARK, Ji Hoon PARK
  • Publication number: 20210047615
    Abstract: An aspect provides a method of increasing efficiency of somatic cell nuclear transfer using a substance (RS-1) increasing Rad51 activity, and a somatic cell nuclear transfer cell prepared according to the method. Another aspect provides a method of screening for a substance increasing Rad51 activity to increase efficiency of somatic cell nuclear transfer. When the substance increasing Rad51 activity is used, efficiency of somatic cell nuclear transfer may be increased.
    Type: Application
    Filed: January 23, 2019
    Publication date: February 18, 2021
    Applicant: CHA UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Dong Ryul LEE, Kyung Soon PARK, Ah Reum LEE
  • Patent number: 10832983
    Abstract: A semiconductor device includes a substrate having a semiconductor layer. A trench is formed within the semiconductor layer. A filling insulating film is disposed within the trench. An insertion liner is disposed within the filling insulating film. The insertion liner is spaced apart from the semiconductor layer and extends along the bottom surface of the trench.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: November 10, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji Min Choi, Dong Ryul Lee, Ho Ouk Lee, Ji Young Kim, Chang Hyun Cho
  • Publication number: 20200239853
    Abstract: Provided are stem cells-induced Serotoli-like cells, methods of preparing the same, and uses thereof. Sertoli-like cells according to one embodiment can be differentiated from embryonic stem cells with excellent proliferative capacity, and thus, can be obtained in large quantities. Also, since the Sertoli-like cells secrete immunosuppressive substances and form immune privilege and induce anti-inflammatory functions, they can be used for development of the cell therapeutic agent.
    Type: Application
    Filed: March 6, 2020
    Publication date: July 30, 2020
    Applicant: CHA University Industry-Academic Cooperation Foundation
    Inventors: Dong Ryul LEE, Dong Won Seol
  • Publication number: 20200181648
    Abstract: The present invention provides methods and compositions to improve the efficiency of somatic cell nuclear transfer (SCNT) of human cells and the consequent production of human nuclear transfer ESC (hNT-ESCs). More specifically, the present invention relates to the discovery that trimethylation of Histone H3-Lysine 9 (H3K9me3) in reprogramming resistant regions (RRRs) in the nuclear genetic material of human donor somatic cells prevents efficient human somatic cell nuclear reprogramming or SCNT. The present invention provide methods and compositions to decrease H3K9me3 in methods to improve efficacy of hSCNT by exogenous or overexpression of the demethylase KDM4 family and/or inhibiting methylation of H3K9me3 by inhibiting the histone methyltransferases SUV39h1 and/or SUV39h2.
    Type: Application
    Filed: December 12, 2019
    Publication date: June 11, 2020
    Inventors: Yi ZHANG, Dong Ryul LEE, Shogo MATOBA, Young CHUNG
  • Patent number: 10378670
    Abstract: A solenoid valve is provided. The solenoid valve is used to control the flow of fluid in various technical fields and products including a transmission installed in a vehicle. The solenoid valve includes a ventilation passage connecting in flow communication the interior and exterior of an operating chamber, configured to operate an armature.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: August 13, 2019
    Assignee: HYUNDAI KEFICO CORPORATION
    Inventors: Hyung Jun Kim, Young Keun Kim, Ho Yeon Kim, Byung Sam So, Dong Ryul Lee
  • Patent number: 10204825
    Abstract: A method for fabricating a semiconductor device includes providing a substrate including a cell region including a bit line structure, a bit line spacer and a lower electrode and a peripheral circuit region including first to third impurity regions, forming an interlayer insulating film on the peripheral circuit region, forming a first metal layer on the interlayer insulating film, forming a first trench and a second trench in the first metal layer between the first and second impurity regions, the second trench is disposed between the second and third impurity regions and exposes the interlayer insulating film, forming a first capping pattern on the first trench to form an air gap in the first trench, filling the second trench with a first insulating material, and forming, on the first metal layer, a contact connected to the third impurity region.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: February 12, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Ryul Lee, Joong Chan Shin, Dong Jun Lee, Ho Ouk Lee, Ji Min Choi, Ji Young Kim, Chan Sic Yoon, Chang Hyun Cho
  • Publication number: 20180291400
    Abstract: The present invention provides methods and compositions to improve the efficiency of somatic cell nuclear transfer (SCNT) of human cells and the consequent production of human nuclear transfer ESC (hNT-ESCs). More specifically, the present invention relates to the discovery that trimethylation of Histone H3-Lysine 9 (H3K9me3) in reprogramming resistant regions (RRRs) in the nuclear genetic material of human donor somatic cells prevents efficient human somatic cell nuclear reprogramming or SCNT. The present invention provide methods and compositions to decrease H3K9me3 in methods to improve efficacy of hSCNT by exogenous or overexpression of the demethylase KDM4 family and/or inhibiting methylation of H3K9me3 by inhibiting the histone methyltransferases SUV39h1 and/or SUV39h2.
    Type: Application
    Filed: October 7, 2016
    Publication date: October 11, 2018
    Inventors: Yi ZHANG, Dong Ryul LEE, Shogo MATOBA, Young CHUNG
  • Publication number: 20180282688
    Abstract: Immunocompatible pluripotent stem cells (pSCs), which include cells compatible with different patient populations or patient-specific cells, find wide application in regenerative medicine therapies. Described herein are immunocompatible pSCs generated using techniques such as parthenogenesis resulting in cells possessing desired haplotypes of reduced zygosity, antigenically compatible with multiple patient populations, or nuclear transfer allowing generation of patient-specific cells. Methods described herein related to parthenogenesis, nuclear transfer, or pSC cell line generation. Also described herein are compositions of immunocompatible pSCs and cell lines generated by the aforementioned techniques.
    Type: Application
    Filed: June 6, 2018
    Publication date: October 4, 2018
    Applicant: Sung Kwang Medical Foundation
    Inventors: Young Gie Chung, Dong Ryul Lee
  • Publication number: 20180208891
    Abstract: Provided are a storage method and a banking system of cells prepared using somatic cell nuclear transfer (NT) technology with homozygous genotypes of genes of human leukocyte antigen (HLA)-A, HLA-B, HLA-DR, and the like. The banking of NT cell-derived stem cells may be applied to autologous or allogenic patients and can provide transplantable cells and tissue materials for the treatment of various diseases such as diabetes, osteoarthritis, Parkinson's disease, and the like.
    Type: Application
    Filed: July 18, 2016
    Publication date: July 26, 2018
    Applicants: SUNGKWANG MEDICAL FOUNDATION, CHA BIOTECH CO., LTD.
    Inventors: Kwang Yul CHA, Dong Ryul LEE, Young Gie CHUNG, Jihwan SONG, Jin Hee EUM
  • Patent number: 10017733
    Abstract: Immunocompatible pluripotent stem cells (pSCs), which include cells compatible with different patient populations or patient-specific cells, find wide application in regenerative medicine therapies. Described herein are immunocompatible pSCs generated using techniques such as parthenogenesis resulting in cells possessing desired haplotypes of reduced zygosity, antigenically compatible with multiple patient populations, or nuclear transfer allowing generation of patient-specific cells. Methods described herein related to parthenogenesis, nuclear transfer, or pSC cell line generation. Also described herein are compositions of immunocompatible pSCs and cell lines generated by the aforementioned techniques.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: July 10, 2018
    Assignee: Sung Kwang Medical Foundation
    Inventors: Young Gie Chung, Dong Ryul Lee
  • Publication number: 20180166352
    Abstract: A semiconductor device includes a substrate having a semiconductor layer. A trench is formed within the semiconductor layer. A filling insulating film is disposed within the trench. An insertion liner is disposed within the filling insulating film. The insertion liner is spaced apart from the semiconductor layer and extends along the bottom surface of the trench.
    Type: Application
    Filed: August 9, 2017
    Publication date: June 14, 2018
    Inventors: Ji Min Choi, Dong Ryul Lee, Ho Ouk Lee, Ji Young Kim, Chang Hyun Cho
  • Publication number: 20180158718
    Abstract: A method for fabricating a semiconductor device includes providing a substrate including a cell region including a bit line structure, a bit line spacer and a lower electrode and a peripheral circuit region including first to third impurity regions, forming an interlayer insulating film on the peripheral circuit region, forming a first metal layer on the interlayer insulating film, forming a first trench and a second trench in the first metal layer between the first and second impurity regions, the second trench is disposed between the second and third impurity regions and exposes the interlayer insulating film, forming a first capping pattern on the first trench to form an air gap in the first trench, filling the second trench with a first insulating material, and forming, on the first metal layer, a contact connected to the third impurity region.
    Type: Application
    Filed: August 2, 2017
    Publication date: June 7, 2018
    Inventors: DONG RYUL LEE, Joong Chan SHIN, Dong Jun LEE, Ho Ouk LEE, Ji Min CHOI, Ji Young KIM, Chan Sic YOON, Chang Hyun CHO
  • Publication number: 20170204369
    Abstract: The present invention provides methods and compostions to improve the efficiency of somatic cell nuclear transfer (SCNT). There is increasing evidence that the epigenetic state of donor nuclei has a significant impact on potential of nuclear transfer embryos to develop into blastocysts, from which pluripotent stem cells are derived. Strategic application of histone agents, capable of altering epigenetic state such as methylation, allows zygotic activation and robust blastocyst generation.
    Type: Application
    Filed: October 28, 2016
    Publication date: July 20, 2017
    Applicant: Sung Kwang Medical Foundation
    Inventors: Young Gie Chung, Dong Ryul Lee, Jin Hee Eum
  • Patent number: 9688961
    Abstract: The present invention relates to testis somatic cell-derived pluripotent stem cells, and more particularly, to pluripotent adult stem cells which exhibit a positive immune reaction to both CD34 and CD73 and which are derived from testis somatic cells. The present invention further relates to a method for producing the testis somatic cell-derived pluripotent stem cells, and to a pharmaceutical composition including same for the treatment of erectile dysfunction.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: June 27, 2017
    Assignee: SUNGKWANG MEDICAL FOUNDATION
    Inventors: Dong-Ryul Lee, Won-Yun Choi, Tae-Ki Yoon
  • Publication number: 20170059056
    Abstract: A solenoid valve is provided. The solenoid valve is used to control the flow of fluid in various technical fields and products including a transmission installed in a vehicle. The solenoid valve includes a ventilation passage connecting in flow communication the interior and exterior of an operating chamber, configured to operate an armature.
    Type: Application
    Filed: November 10, 2016
    Publication date: March 2, 2017
    Applicant: HYUNDAI KEFICO CORPORATION
    Inventors: Hyung Jun Kim, Young Keun Kim, Ho Yeon Kim, Byung Sam So, Dong Ryul Lee